Engine 3 is a 1959 Crown Firecoach built for South Gate, CA.  She carries serial number F1168 and was powered by a Hall-Scott
935 gasoline motor with a manual transmission and fitted with a 1,250gpm Waterous pump and 300 gallon water tank.
When South Gate consolidated its fire protection services with Los Angeles County in 1975, F1168 became LACo Engine 54 and
was assigned shop number 49001.  She is shown below in a photo by Duane Troxel standing in for Engine 57.

Above photo from eBay.